Article History
Received: 3 November 2019
Accepted: 6 January 2020
First Online: 21 January 2020
Compliance with ethical standards
:
: All authors declare that they have no competing interests. They confirm that the research was conducted in the absence of any commercial or financial relationships.
: The study was approved by the local ethics committee (vote number: 045/17).
: Written pre-operative informed consent was obtained from all patients before enrollment.